中小功率单相全桥节能型谐振极逆变器  

Medium and Small Power Single-Phase Full-Bridge Energy-Saving Resonant Pole Inverter

作　　者：王强[1,2] 王有政[1,2] 王天施 刘晓琴[1,2] WANG Qiang;WANG You-zheng;WANG Tian-shi;LIU Xiao-qin(College of Information and Control Engineering,Liaoning Shihua University,Fushun,Liaoning 113001,China;National Experimental Teaching Demonstration Center of Petrochemical Process Control,Fushun,Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学信息与控制工程学院,辽宁抚顺113001 [2]辽宁石油化工大学石油化工过程控制国家级实验教学示范中心,辽宁抚顺113001

出　　处：《电子学报》2020年第11期2263-2266,共4页Acta Electronica Sinica

基　　金：辽宁省教育厅科学研究经费项目(No.L2019017);辽宁省自然科学基金指导计划项目(No.20170540586);辽宁石油化工大学国家级科研项目培育基金(No.2016PY-016)。

摘　　要：中小功率单相全桥逆变器常以金属氧化物半导体场效应晶体管(Metal Oxide Semiconductor Field Effect Transistor,MOSFET)作为开关器件,为实现逆变器在高开关频率下的节能运行,本文提出了一种单相全桥节能型谐振极逆变器拓扑结构,其桥臂上分别并联相同的辅助谐振电路.桥臂上的主开关开通前,其并联的谐振电容的电压能周期性变为零,使主开关完成零电压软开通,可消除MOSFET的容性开通损耗,有利于逆变器的节能运行.本文分析了电路的工作模态,实验结果表明主开关器件处于零电压软切换.因此,该拓扑结构对于研发高性能的中小功率单相全桥逆变器具有参考价值.Metal oxide semiconductor field effect transistor(MOSFET)is often used as the switching devices in medium and small power single-phase full-bridge inverters.To realize energy-saving operation of the inverters at high switching frequency,a single-phase full-bridge energy-saving resonant pole inverter topology is proposed.The same auxiliary resonant circuit is connected with parallel on the bridge arm.Before the main switch on the bridge arm is switched on,the voltage across its parallel resonant capacitor becomes zero periodically,which makes the main switch achieve zero-voltage soft-switching and eliminates the capacitive switching loss of MOSFET.It is conducive to the energy-saving operation of the inverter.In this paper,the working mode of the circuit is analyzed.The experimental results show that the main switching devices achieve zero-voltage soft-switching.Therefore,this topology has reference value for the research and development of high-performance medium and small power single-phase full-bridge inverters.

关 键 词：逆变器 桥臂 辅助电路 并联 开关损耗 零电压开通 谐振 

分 类 号：TM464[电气工程—电器]